reductone
noun
re·duc·tone
-kˌtōn
plural -s
: any of a class of reducing enediol aldehydes or ketones RC(OH)=C(OH)COR
especially : a crystalline osone HOCH2COCHO or a tautomer [as HOCH=C(OH)CHO] that is a strong reducing agent in alkaline solution and is obtained from glucose by alkaline degradation or from dihydroxy-acetone by oxidation; hydroxy-pyruvaldehyde
ascorbic acids … may be considered as reductones 
W. W. Pigman & R. M. Goepp †1946
W. W. Pigman & R. M. Goepp †1946 
Word History
Etymology
reduction + -one
- under someone's control
- under someone's heel
- under someone's leadership
- under someone's name
- under someone's nose
- under someone's roof
- under someone's thumb
- under someone's tutelage
- under someone's/something's name
- under something's name
- under stress
- under suspicion
- under the assumption
- under the auspices of
- under the authority of
- under the banner of
- under the big top
- under the circumstances
- under the control of
- under the cosh
- under the counter
- under the cover of darkness
- under the cover of night
- under the eye of
- under the guise of